Apparatus for treating foodstuffs



June 24,* 1930.

fr. F. RATAlczAK ET AL i 1,766,942 APPARA'IUS FOR TREATING FOODSTUFESFiieq sept. 24, 1926 wuahtow attozneq Patented June 1230 UNITED STATES'PATENT er1-lcs THOMAS l'. ANDIILTON K. AX-ERS, OIF TROY, OHIO, ASSIGNORSTO THE.

HOBART IANUFACTUBING COMPANY, OF TROY, OHIO, A CORPORATION OF OHIO 4APPARATUS FOB.v TREATING .FOODSTUFFS Application led September '24,1926. SerialNo. 137,508.

This invention relates to mixin machines, and particularly to machinesfor m1x1ng foodstuffs such as bread dough, cake dough, and the like. y

One of the principal objects of this 1n-` vention is to provide anefficient and effectively operating mixing machine of this characterwhich is simple in construction and reliable in operation.

Another object of this invention is to provide an improved beateradapted for use with such a mixing machine, which is particularlyeicient and effective in operation.

Other objects and advantages of this invention will be apparent from thefollowing description when taken in connection with the accompanyingdrawing.

In the drawing inwhich like characters of reference designate like partsthroughout the several views thereof,

Fig. 1 is a side elevationv of a mixing machine constructed inaccordance with this invention, having certain parts broken away and insection to more clearly illustrate l the construction thereof; and

Fig. 2 is an elevational view of the beater, taken at right angles tothe view of the beater in Fig. l and looking from the lefthand sidethereof.

In the embodiment of the invention illustrated herein, a machine isshowning ring 12 carrying a suitable mixing owl 13. Positioned at the up erend ofthe standard 11 is a casing 20, ousing suitable ear transmission,dnven by a motor 21.

ctatably mounted upon the ortion ofthe casing which ov'erhan s t e bowl.is a rotary'head 22 which is driven by the motor through the geartransmission. Rotatably mounted within a downward extension 23 of thehead 22 and also operatively connccted to the gear transmisslon so 'asto be 4 rotated thereby within the head 22 is la shaft 25 the lower endof which is formed to detachably receivea beater, stirrer or other tool,for o rating upon dou h, or other materia). wit the bowl. T econstruction and arrangement ofthese parts is such that I a planetarymotion is imparted, the shaft 25 rotating on its own axis, and at thesame time moving bodily through a circular path as the head 22 rotates.The driving mechanism and -gearing for imparting this motion to thedriven shaft 25 from the driving motor 21 is not illustrated, as suchmechanism is well known in the art, and `any suitable drivingconnections between the motor 21 and the, driven shaft 25 may beused toimpart motion thereto. j R

Gonnected'to the depending driven shaft 25 is a beater which comprises amain body portion 30, which is shown as curved outwardly and downwardlyas at 31 to conform somewhat to the interior shape of the mixinfr bowl13. At its upper end the main body portion is formed with attachingmeans `which may be of any suitable character but is shown as a hubportion 32 having a socket therein to receive the lower endA of theshaft 25-a bayonet slot and pin connection being yprovided forinterconnecting the beater and operating shaft. Surrounding theattaching means'is a cone-shaped anti-creeping member 34', whichfunctions during operation to prevent the dough, or other material inthe bowl, from winding around the attaching means and creeping upontothe shaft 25.V

The lower part of thecurved main body portion is shown as in substantialvertical ali nment with the attaching member 32 an the shaft 25,although this construction may be varied as desired. Attached.l

to the lower en d of the main body portion, and preferably formedintegrally therewith, andextending upwardly and away from the curvedbodyportion is a projecting arm 40. This arm is inclined away from thegeneral plane of the body of the beater, and during general plane of thebody of the b eater, the inclination however being opposlte to theinclination of the lower arm 40. In addition the free end of this upperarm is downturned, as indicated particularly by the numeral 46 in Fig.2. During mixing operations this upper arm tends to produce a downwardthrust upon the material being mixed, to thus maintain the materialwithin the path of movement of the lower arm and the body portion. Atthe same time the lower arm gives an upward thrust to the material inthe bowly and as a result a very effective mixing action is produced. Asa result an effectlveness of operation hitherto unknown is attained, thecapacity of the device over similar devices using beaters of otherconstruction is multiplied several times.

While the form of ap` aratus herein des scribed constitutesa pre erredembodiment of the invention, it is to be understood that the inventionis not limited to` this precise form of apparatus, and that changes maybe 'made therein without departing from the scope of the invention whichis defined in the appended claims.

What is claimed is:

1. For use in a mixing machine of the class described, a beatercomprising a downwardly extending main body portion, an

arm attached to said main body portion at Athe upper end thereof andinclined to the general plane of the body portion of the beater, asecond arm attached to said body portion at the lower end thereof, andoppositely inclined with respect to the general plane of the bodyportion and inclined with respect to each other.

2. For use in a mixing machine, a beater comprising an attaching means,a downwardly projecting main body portion, an

outwardl projecting arm attached to said main bo y portion adjacent theupper end thereof, and an upwardly projecting arm -attached to said mainbody portion at the lower end thereof, said arms ,being oppositelyinclined with respect to the general plane of said main body portion toexert thrusts on the material acted on in the gen; eral direction of themain body portion.

3. F or use in a mixing machine, a beater comprlsing 'an attachmg means,a downwardly projecting and outwardly curved main body portion, anupwardly projecting arm attached to said main'body portion. at th upperend thereof, and an upwardly projecting arm attached to said mainportion adjacent the lower end thereof.

4. For use in a mixing. machine, a beater `comprising an attaching meansa downwardly projecting and outwardly curved main ody portion, anoutwardly and upwardl projecting arm attached to said main dy portion atthe upper end thereof,

body Y to said main body portion at the lower end thereof, said armsbeing oppositely inclined with respect to the general plane of said mainbody portion respectively.

5. For use in a mixing machine, a beater comprising an attaching means,a downwardly projecting main bodyportion, and an outwardly andupwardlyprojecting arm attached to said main body portion at the upperend thereof, said arm being overturned adjacent its free end.

6. For use in a mixing machine, a beater comprising. an attaching means,al downwardly projecting main body portion, and an outwardly andupwardly projecting arm attached to said main body portion at the upperend thereof, said arm being inclined to the general plane of the saidbody portion and downturned adjacent its free end.

7. For use in a mixing machine of the class described, a beatercomprising an attaching means, a downwardly projecting and outwardlycurved main body portion and an upwardly projecting arm" attached tosaid main body portion at the lower end thereof, said arm inclined awayfrom the plane of the outwardly curved body portion to produce a thrustwhich has a substantial vertical component on the material acted upon. v

8. For use in a mixing machine, abeater comprising an attaching means, adownwardly projectingmain body portion, and

an upwardly projecting arm attached to` said main body portion at theupper end thereof, said arm bein curved throughout' a portion ofitslengt and an upwardly projecting arm attac ed to said main body`portion at the lower end thereof, said arms being op ositely inclinedwith respect to the main bo y portion so as to exert thrusts in thedirection of the axis of rotation in opposing directions.

9. In a mixing machine, a mixing bowl adapted to hold material to bemixed, and a beater adapted for rotational and bodily movement withinsaid bowl to move within the material to be mixed, said beatercomprising a downwardly projecting and out wardly curved main bodyportlon, an upwardl projecting arm attached to said main d portion. atthe upper end thereof, and` gn upwardly projecting arm attached to saidmain. body portion at the lower endthereof so as to extend upwardly.away from the bottom of the bowl, 'said arms being o positely inclinedwith respect to the general) tion.

10. For use in a mixing machine, a beater comprising av downwardlyextending main bod ortion,'attaching means at the up r, en t ereof, andmeans at the upper en of said main body 'portion for exerting plane o fsaid main body por? a downward thrust on the material acted upon.

11. For vuse in a machine of the class described, a beater com rising anattaching means, a downwar ly projecting curved main body portionextendingfrom said attaching means, and an outwardly and upwardlyprojecting continuation of saidbody portion at the upper end thereoflying on the opposite side of the axis of rotation from said bodyportion, for exert-- ing a downward thrust `on the material acted upon.-

12.- For use in a mixing machine, a beater comprising a body portion, anarm attached to said body portionat one end thereof for producing adownward thrust `on the material acted on, anda second arm provided onsaid body `portion at the lower end thereof`and inclined so as 'toproduce an upward thrust on the material.

13. `In a mixing machine of the class described, a mixing bowl adaptedto hold material to be mixed, and a beater adapted for rotational andplanetary movementI within ysaid bowl, said beater comprising adownwardly projecting and outwardly curved main body portion and anupwardly lprojecting arm at the bottom of said main body portionextending upwardly away from the bottom of the lbowl and terminating inan end spaced considerably above the bottomoi:l the bowl, said upwardlyprojecting arm b cing laterally inclined to the vertical plane -passingthrough said beater axis and the body portion'of said beater to give anup# ward thrust to material being mlxedwithin said bowLe` In testimonywhereof we hereto affix our I signatures. -THOMAS F. RATAICZAK.

MILTON K. AKERS.

